( 120 ) 



— when more deeply parted and pinnatifid, the 

 lobes not linear; flowers yellow. — IC. Com- 

 mon. Summer. 



5. T. HETEEOPHYLLUM Greene. Beak of the 

 akene but little longer than body; flowers yel- 

 low. — 0. Common. Spring. 



72. Taraxacum Haller. Dandelion. 



Involucre imbricate. Akenes contracted 

 into a long beak; pappus co-seriate; bristles 

 white, capillary nearly persistent. — U- Flow- 

 ers yellow. 



1. T. OFFICINALE Weber. Ballast weed in- 

 troduced from Europe; rare. Summer. Offici- 

 nal under the old Linnean name. Leontoclon 

 Taraxacum. 



73. Sonchus L. Sow-thistle. 



Involucre co-seriate, imbricate. Akenes 

 compressed, truncate. Pappus oo-seriate, ca- 

 pillary. Hairs in fascicles, soft. Flowers yel- 

 low. 



1. S. OLERACEUS L. Auricles of the cau- 

 line leaves acute. — 0. Common. All the 

 year round. Ballast weed from Europe. 



2. S. ASPER Yill. Auricles of the clasping 

 cauline leaves rounded. — 0. Ballast weed 

 from Europe. 



